Unit 6 Word Work

Edit Answers
123456789101112
Across
  1. 2. something that is bad or reduces the chances of success
  2. 5. an important material that exists in the air, soil, and all living things on Earth
  3. 7. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
  4. 9. anything that takes up space; can be in different forms such as solid, liquid, or gas
  5. 10. tiny living things in water that produce their own food, like plants do
  6. 11. the air that surrounds a planet
  7. 12. water that moves across a surface, often carrying materials with it
Down
  1. 1. a type of gas that plants sometimes take in and that animals release when they breathe
  2. 3. tiny, floating living things in water that are smaller than algae and produce their own food, like plants do
  3. 4. the process of carbon moving through living things and the environment
  4. 6. a set of events that repeats in the same order over and over
  5. 8. an organism that is usually a decomposer; some cause illness